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PDF AME5170 Data sheet ( Hoja de datos )
| Número de pieza | AME5170 | |
| Descripción | Low Cost Micro Power Boost DC/DC Converter | |
| Fabricantes | AME | |
| Logotipo |  |
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AME, Inc.
AME5170
Low Cost Micro Power
Boost DC/DC Converter
n General Description
The AME5170 is a fixed off-time step-up DC/DC con-
verter in a small SOT-25 package. The AME5170 is ideal
for LCD panels requiring low current and high efficiency
www.DataSheaest4wU.eclolmas LED application for cellular phone backlighting,
PDAs, and other hand-held devices. The low 400ns off
time allows the use of tiny external components.
AME5170 is designed to drive up to four white LEDs in
series with a constant current from a single Li-lon bat-
tery. To control LED brightness, the LED current can be
adjusted by applying a PWM (pulse width modulated)
signal with a frequency range of 100Hz to 50KHz to the
EN pin.
n Typical Application
VIN
1.5V to 5V
CIN
4.7µF
L1
2.2µH
IN SW
AME5170
EN
R1
100KΩ
VOUT = 5V
CF
20pF
COUT
4.7µF
GND
FB
R2
33KΩ
n Features
l 0.7Ω Internal Switch
l Use Small Surface Mount Components
l Adjust Output Voltage up to 28V
l Input under Voltage Lockout
l 0.1µA Shutdown Current Typical
l Small SOT-25 Package
l All AME's Lead Free Products Meet RoHS
Standards
n Applications
l LCD Bias Supplies
l White LED Back-Lighting
l Handheld Devices
l Digital Cameras
l Portable Applications
Figure.1 Typical 5V Application
VIN
1.5V to 5.5V
CIN
4.7µF
L1
10µH
IN SW
AME5170
EN
GND
FB
VOUT = 12V
R1
240KΩ
COUT
1µF
R2
27KΩ
Figure.2 Typical 12V Application
VIN
1.5V to 5.5V
CIN
4.7µF
L1
10µH
IN SW
AME5170
EN
GND
FB
VOUT = 20V
R1
510KΩ
COUT
1µF
R2
33KΩ
Rev.A.02
Figure.3 Typical 20V Application
1
1 page  
AME, Inc.
AME5170
n Absolute Maximum Ratings
Low Cost Micro Power
Boost DC/DC Converter
Parameter
Input Supply Voltage
www.DataSheet4U.com
EN, FB Voltages
SW Voltage
N-Channel Switch Sink Current
ESD Classification
Symbol
VIN
EN,VFB
VSW
ISW
Maximum
6
VIN
VOUT + 0.3
600
B*
Caution: Stress above the listed absolute rating may cause permanent damage to the device.
* HBM B: 2000~3999V
n Recommented Operating Conditions
Unit
V
V
V
mA
Parameter
Ambient Temperature Range
Junction Temperature Range
Storage Temperature Range
Symbol
TA
TJ
TSTG
Rating
- 40 to 85
- 40 to 125
- 65 to 150
Unit
OC
n Thermal Information
Parameter
Thermal Resistance*
(Junction to Case)
Thermal Resistance
(Junction to Ambient)
Package Die Attach Symbol Maximum
SOT-25
TSOT-25 Conductive Epoxy
θJC
θJA
81
260
Internal Power Dissipation
PD 400
Solder Iron (10Sec)**
* Measure θJC on backside center of molding compund if IC has no tab.
** MIL-STD-202G 210F
350
Unit
oC / W
mW
oC
Rev.A.02
5
5 Page 
AME, Inc.
AME5170
n Tape and Reel Dimension
TSOT-25
www.DataSheet4U.com
P
Low Cost Micro Power
Boost DC/DC Converter
PIN 1
AME
AME
W
Carrier Tape, Number of Components Per Reel and Reel Size
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
TSOT-25
8.0±0.1 mm
4.0±0.1 mm
3000pcs
180±1 mm
Rev.A.02
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet AME5170.PDF ] | |
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